Langmuir, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 19, 2024

Constructing alternating donor–acceptor (D–A) units within g-C3N4 represents an effective strategy for enhancing photocatalytic performance through improved charge carrier separation while concurrently addressing energy shortages and facilitating wastewater remediation. Here, a series of D–A-type conjugated photocatalysts (CNBTC-X) are prepared using as acceptor unit different masses 5-bromo-2-thiophenecarboxaldehyde (BTC) donor by one-step thermal polymerization. CNBTC-50 presents higher properties CO2 reduction coupled with tetracycline (TC) removal than those g-C3N4, CNBTC-10, CNBTC-30, CNBTC-70. The introduction the unique electron-donor–acceptor structure effectively drives transfer photoinduced carriers reducing internal hindrance. Photocatalytic experiments reveal that photocatalyst achieves up to 94.6% TC under visible light irradiation conditions. Compared pristine degradation reaction rate constant is significantly increased about 3.87 times. study examines influence various parameters on activity, including catalyst concentration, pH, concentration. Additionally, LC–MS utilized perform comprehensive analysis intermediates pathways involved in degradation. Furthermore, demonstrates remarkable achieving rates 20.83 μmol g–1 h–1 (CO) 9.36 (CH4), which 10.68 5.98 times more efficient respectively. This work aims offer valuable guidance rational design nonmetal D–A-structured catalysts integrates systems couple antibiotic removal.

Язык: Английский